AMP: 57 Location: I-90 and 3rd St, Shoshone Cty Reassurance shield after the Osburn exit AMP: 59 Location: I-90 and Markwell Ave, Shoshone Cty 1 mile to the Silverton business spur, which is unsigned presumably to avoid confusion with the I-90 Wallace Business Loop that’s coming up shortly. AMP: 59 Location: I-90 and Markwell Ave, Shoshone Cty After … Continue reading Interstate 90, I-90 Bus Spur to I-90 Bus Spur